Tire rim



R. E. MCNAMARA March 13, 1928.

TIRE RIM Filed June 27, 1924 2 Sheets-Sheet- 1 1 Inventor MSJQZZ MU/Zara' Byl Attorney March 13, 1928. 1,662,321

R.E. MCNAMARA TIRE RIM Filed June 27, 1924 2 Sheets-Sheet 2 if? a 6 16l, 1,3 da "ZZ Inventor fasse?? @M7/era By E I I Attorney Patented Mar.13, 1928.

UNITED STATES.V

RUSSELL n` MCNAMARA, or sr. Mears, ONTARIO, CANADA.

TIRE RIM.

Application led .Tune 27, 1924. Serial No. 722,772.

The present invention pertains to a novel tire rim construction forholdingy the tire rim of an automobile or other wheel.

Theprincipal object of the invention is the provision of a two part rim7one, of which parts may be readily locked to the other part in theassembly of therim. The invention also provides for rapid unlocking anddetachment of the rim parts when a tire In is to be changed. w 'Y i Theinvention comprises a felloe band carrying a plurality of spaced blocks7each block having a slot. The rim carries a plurality of spaced lugsadapted to enter Ythe i5 slots. Adjacent each slot7 the block is formedwith a recess adapted to receive one oi the lugs. The lugs and recessesare so constructed as to hold the rim against outward movement withreference to the ielloe :Zo band. The invention provides also for valocking device which holdsthe rim against rotation relatively to thefelloe band. 1

Theinvention is fully disclosed in the following descriptionA and linthe accompanying drawings in which:

Figure 1 is a side elevation of an aut0- mobile wheel having the new rimapplied thereto;

Figure 2 `is a section on the line 2-2 o 3o Fi ure 1;

igure 3 is a similar section showing the rim parts separated;

Figure 4 is a section through the rim of a modified form;

Figure 5 is a section on the line 5-5 of Figure 2;

Figure 6 is a fragmental elevation of the rlm' Figure 7 is a fragmentaryelevation of the rim applied to the felloe prior to lock- Figure 8 is asection on the line 8--8 of Fi ure l;

igure 9 is a section on Figure 8;

Figure 10 is a perspective view of the locking seat; y

Figure 11 is a section on the line 11-11 of Fi re 9;

igure 12 is a detail section of the felloe behind one of the recessesthereof7 showing a fragment of the ring in elevation; and, i

Figure 13 is a section at right angles to Figure 12 with the lugreceived in the recess.

Reference will now be had to these views the line 9-9 of by means oflike vcharacters which are einf ployed to designate corresponding ypartsthroughout. y y i i In Figure 1 the numeral 1 indicates the hub of awheel from which radiate a plu rality ofispokes 2 in the usual manner.The

outer ends are engaged by a metal telloe 3 which of channelform, as maybe seen from vFigure 2. Within the felloe are provided blocks 4 atregular intervals; Each block is formed with a slot 5 which also passesthrough one side ofthe felloe,` as shown in Figures 1 and 7. v Y 1 fThefelloeis surrounded by a tire rim of the clincher type comprisingaclincher rim Section 6 and a c lincher side ring 7 for at cide with undenter the slots 5.v `Each lug A comprises a concaveface l2 forming anarrow inner end 13. The blocks tV are each formed adjacent the 'slot5w-itha recess 14 adapted to receive the corresponding lug 11. Thelateral walll of each recess is conveXed in such a manner as to beengaged by the concave face 12 of the lug, as shown in Figure 2. f

When the clincher rim is to be applied, it is placed against the felloeso that the lugs 11 enter the slots 5. The rim is then slightly turnedvwhereupon the lugs enter the recesses 14. The ring is held againstinward movement by means of the joint 9-10 and against outward movementby reason of the engagement of the lugs with the inclined walls of therecesses.

` The means for locking the rim against rotation with reference to thefelloe is assoallows the seat to be slipped over the valve tube 17, asshownin Figures 8 and 9. The usual nut 22 is threaded over the valvetube and against the plate 20.

For the purpose of holding the rim parts together when not applied to afelloe, they may be formed with indentations 23 and 24 at theoverlapping parts, as shown in Figure 4.

The t'elloe is provided with a shoulder Q5 adjacent one of the recesses14, preferably the recess diametrically opposite the valve tube. The lugl1 is adapted to pass over the shoulder when the tire .is deflated, butis pressed lirmly against the wall of the recess upon infiation and thusheld by the shoulder against shifting, as may be seen from Figures l2and 13.

The rim (i may he provided near the curved edge thereof with a head E26engageable by the blank side ot' the felloe, as shown in Figure Q.

lVhile a specific embodiment of the invention has been illustrated anddescribed, it is to he understood `that various alterations in thedetails of construction may be made without departing from the spirit ofthe invention as indicated by the appended claims.

Having thus fully described the invention, what I claim as new anddesire to protect by Letters Patent; isz- 1. In combination, a channelfelloe hand. a plurality ot blocks carried in said band, each ot saidblocks having a slot, a side ring carrying a plurality of lugs adaptedto enter said slots, each lug having a. concave face, said blocks beingformed each with a recess conununicating with the slot and adapted toreceive one of the lugs, each recess having a convex wall to engage theconcave face of the corresponding lug.

2. In combination, a channel felloe band. a plurality ol blocks carriedin said band. each of said blocks having a slot, a side ring carrying aplurality of lugs adapted to enter said slots, each lng having a concaveface, said blocks being formed each with a recess communicating with theslot and adapted to receive one ot' the lugs, each recess having aconvex wall to engage the concave face of the corresponding lug, and a.shoulder formed adjacent one of said rccesses, whereby said shoulderprevents slid ing of the lugs contained in said recess when the rimcarries an intiated tire.

3. In combination, a channel felloe band, a plurality of blocks carriedin said band, cach of said blocks having a slot, a side ring carrying aplurality ot' lugs adapted to en ter said slots, said blocksl beingformed each with a recess communicating with the slot and adapted toreceive one of the lugs.

4. In combination, a channel felloe band, a plurality of blocks carriedin said band, each ol said blocks having a slot, a side ring carrying aplurality ot lugs adapted to enter eaid slots. said blocks being 'formedeach with a recess communicating with the slot and adapted to receiveone ot' the lugs, and a shoulder formed adjacent one of lsaid recess-es, whereby said shoulder prevents sliding ol the lugs contained insaid recess when the rim carries an inflated tire.

In witness whereof I have hereunto sety my hand.

RUSSELL E. MCNAMA RA.

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